CAJ | 학술논문

为建立工作场所空气中甲基丙烯酸浓度的检测方法，用硅胶管采集工作场所空气中的甲基丙烯酸，用丙酮解吸后进样，经毛细管色谱柱分离，FID检测器检测，以保留时间定性，峰高或峰面积定量。实验发现，硅胶管采样效率为100％，丙酮解吸效率为92.92％，方法的加标回收率为89.3％-98.0％。样品在低温下可保存至少7天。甲基丙烯酸在0-808.80μg/ml浓度范围内线性关系良好，相关系数0.9995，方法的检出限为0.74μg/ml。采样4.5L，最低检出浓度为0.16 mg/m3。研究表明，该方法操作简便，采样效率、准确度、精密度、解吸效率及样品稳定性均满足职业卫生标准制定指南要求，适用于工作场所空气中甲基丙烯酸浓度的测定。
위건립공작장소공기중갑기병희산농도적검측방법，용규효관채집공작장소공기중적갑기병희산，용병동해흡후진양，경모세관색보주분리，FID검측기검측，이보류시간정성，봉고혹봉면적정량。실험발현，규효관채양효솔위100％，병동해흡효솔위92.92％，방법적가표회수솔위89.3％-98.0％。양품재저온하가보존지소7천。갑기병희산재0-808.80μg/ml농도범위내선성관계량호，상관계수0.9995，방법적검출한위0.74μg/ml。채양4.5L，최저검출농도위0.16 mg/m3。연구표명，해방법조작간편，채양효솔、준학도、정밀도、해흡효솔급양품은정성균만족직업위생표준제정지남요구，괄용우공작장소공기중갑기병희산농도적측정。
A kind of method using Gas-chromatography to measure the methacrylic acid concentration in the work-place air was researched .The methacrylic acid in the air was collected by silicone tube , and the samples was injec-ted after desorption with acetone , separated with capillary-column, detected by FID detector so as to retain time property and peak height or peak area ratio .Sampling air with 0.5L/min for 15min, sampling efficiency of silicone tube was 100%, the acetone was stripping liquid , and the desorption efficiency was 92.92%.The sample could be stored in low temperature at least 7 days.There was a good linearity (r=0.9995) over the methacrylic acid con-centration of 0-808.80μg/ml, the detection limit could reach 0.74μg/ml, and the minimum detectable concentra-tion was 0.16mg/m3(sampling volume 4.5L ).This method was proved to be accurate and sensitive ,to meet the determination of methacrylic acid in the workplace air .